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3. Polynomials
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Q1 of 108 Page 44

Find the nature of the roots of the following quadratic equations:


Nature of the quadratic equation can be found out using the following formula

b2 – 4ac > 0 for real roots


When we compare the above quadratic equation with the generalized one we get,


ax2 + bx + c = 0


a = 3


b = -2


c = 1/3


⟹ (-2)2 – (4 × 3 × 1/3)


⟹ 4 – 4


⟹ 0


The answer is zero which implies that the quadratic equation has real and equal roots.


More from this chapter

All 108 →
1

Find the nature of the roots of the following quadratic equations:

x2 – 4x + 4 = 0


1

Find the nature of the roots of the following quadratic equations:

2x2 + 5x + 5 = 0


2

Find that value of k in the following quadratic equation whose roots are real and equal:

kx(x – 2) + 6 = 0


2

Find that value of k in the following quadratic equation whose roots are real and equal:

x2 – 2(k + 1)x + k2 = 0


Questions · 108
3. Polynomials
1 1 1 1 1 1 2 2 2 2 2 2 3 1 1 1 1 2 2 2 3 3 3 4 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 2 2 2 2 2 2 3 4 5 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 4 5 1 1 1 1 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 19 19 19 20 21 21 22 23
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